Shibboleth identification plugin for CKAN 2.4.

You can install ckanext-shibboleth either with

pip install -e git+git://github.com/geosolutions-it/ckanext-shibboleth.git#egg=ckanext-shibboleth

or

git clone https://github.com/geosolutions-it/ckanext-shibboleth.git
python setup.py install

Add shibboleth the the ckan.plugins line

 ckan.plugins = [...] shibboleth

Configure the URL secured with Shibboleth authentication

 # Default is /shibboleth/login
 ckanext.shib.login_path = /secure 

If you want to log out from the SSO when exiting from CKAN, you have to set the logout_path to the URL that will perform the Shibboleth logout

 # Default is /
 ckanext.shib.logout_path = /shibboleth/logout

Add the plugin:shibboleth section, customizing the env var names:

[plugin:shibboleth]
use = ckanext.shibboleth.repoze.ident:make_identification_plugin

session = YOUR_HEADER_FOR_Shib-Session-ID
eppn = YOUR_HEADER_FOR_eppn
mail = YOUR_HEADER_FOR_mail

fullname = YOUR_HEADER_FOR_cn
givenname = YOUR_HEADER_FOR_FIRST_NAME
surname = YOUR_HEADER_FOR_SURNAME

check_auth_key = YOUR_HEADER_FOR_AUTH_TYPE
check_auth_op = "equals" | "not_empty"
check_auth_value = YOUR_AUTH_VALUE

check_auth_* keys are needed to find out if we are receiving info from the Shibboleth module. Customize both right-side values if needed. For instance, older Shibboleth implementations may need this configuration:

check_auth_key=HTTP_SHIB_AUTHENTICATION_METHOD 
check_auth_op=equals
check_auth_value=urn:oasis:names:tc:SAML:1.0:am:unspecified

If check_auth_op=not_empty then check_auth_value is not needed.

The related CKAN user will be created using the fullname if given, or composing name and surname. You must set at least the fullname header name, or the givenname+surname headers name, or CKAN will not be able to create a user.

Add shibboleth to the list of the identifier plugins:

[identifiers]
plugins =
    shibboleth
    friendlyform;browser
    auth_tkt

Add ckanext.shibboleth.repoze.auth:ShibbolethAuthenticator to the list of the authenticator plugins:

[authenticators]
plugins =
    auth_tkt
    ckan.lib.authenticator:UsernamePasswordAuthenticator
    ckanext.shibboleth.repoze.auth:ShibbolethAuthenticator

Add shibboleth to the list of the challengers plugins:

[challengers]
plugins =
    shibboleth
#    friendlyform;browser
#   basicauth

The ckanext-shibboleth extension requires a path to be externally secured by the shibboleth client module.
By default it's /shibboleth, but you can customize it for your needs.

Using mod_shib on your apache httpd installation, you need these lines in your configuration file:

# Customize with your path
<Location ~ /secure > 
    AuthType shibboleth
    ShibRequireSession On
    require valid-user
</Location>